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Find the attractive force is newton betw...

Find the attractive force is newton between two parallel glass plates, separated by a distance `h=0.1mm` after a water drop of mass `m=70mg` was introduced between them. Assume wetting to be complete and surface tensin of water, `T=70` dyne/cm

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The correct Answer is:
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`F=(2T)/(h)A=(2T)/(h)xx(m)/(rhoh)` or `F=(2Tm)/(rhoh^(2))`
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